US9024032B2 - Inhibitors of catechol O-methyl transferase and their use in the treatment of psychotic disorders - Google Patents

Inhibitors of catechol O-methyl transferase and their use in the treatment of psychotic disorders Download PDF

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US9024032B2
US9024032B2 US13/582,601 US201113582601A US9024032B2 US 9024032 B2 US9024032 B2 US 9024032B2 US 201113582601 A US201113582601 A US 201113582601A US 9024032 B2 US9024032 B2 US 9024032B2
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hydroxy
pyridin
phenyl
aryl
heterocyclyl
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US20130084346A1 (en
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Scott Wolkenberg
James C. Barrow
Michael S. Poslusney
Scott T. Harrison
B. Wesley Trotter
James Mulhearn
Kausik K. Nanda
Peter J. Manley
Zhijian Zhao
Jeffrey W. Schubert
Nathan Kett
Amy Zartman
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Merck Sharp and Dohme LLC
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Merck Sharp and Dohme LLC
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Assigned to MERCK SHARP & DOHME CORP. reassignment MERCK SHARP & DOHME CORP. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ZARTMAN, AMY, KETT, NATHAN, WOLKENBERG, SCOTT, BARROW, JAMES C., HARRISON, SCOTT T., NANDA, KAUSIK K., TROTTER, B. WESLEY, MANLEY, PETER J., MULHEARN, JAMES, POSLUSNEY, MICHAEL S., SCHUBERT, JEFFREY W., ZHAO, ZHIJIAN
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    • C07D413/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
    • C07D413/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing three or more hetero rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
    • C07D417/10—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a carbon chain containing aromatic rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
    • C07D417/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing three or more hetero rings
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
    • C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
    • C07D471/04—Ortho-condensed systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2300/00—Mixtures or combinations of active ingredients, wherein at least one active ingredient is fully defined in groups A61K31/00 - A61K41/00

Definitions

  • the symptoms of schizophrenia are generally divided into three categories; positive, negative and cognitive.
  • Positive symptoms include hallucinations, delusions and disorganized behavior while negative symptoms are characterized by a lack of pleasure and/or interest in life.
  • Cognitive deficit includes difficulties in the organization of thoughts and prioritization of tasks.
  • Patients with bipolar disorder generally display circular mood changes ranging from severe depression to severe mania with or without psychotic features.
  • Schizophrenia and bipolar disorder are among the most severe forms of psychiatric disorders that elicit overlapping cognitive deficits (Tasman et al., Psychiatry, West Wales, John Wiley & Sons, Ltd., Second Edition, Volume 1, 2003, pp 254-272; and Sadock and Sadock, Kaplan and Sadock's Comprehensive Textbook of Psychiatry, 7 ed., Vol. 1, 2005, Philadelphia, Pa.; Lippincott Williams & Wilkins, pp 236-272 and 1330-1395) and they tend to be chronic/progressive.
  • n-back or Wisconsin Card Sorting Test that evaluate prefrontal engagement (Weinberger et al., 1986, 1988; Carter et al., 1998; Callicott et al., 2000; Barch et al., 2001).
  • prefrontal engagement In addition to deficits in executive function, reduced dopamine neurotransmission in the prefrontal cortex is involved in several brain activities including; attention, hedonic activities, natural rewards, and biologic activities such as cell signaling. Therefore, a compound which selectively enhances dopamine neurotransmission within the prefrontal cortex may have therapeutic potential for the treatment of cognitive and negative symptoms.
  • COMT Catechol-O-methyltransferase
  • DOPAC dopamine metabolite dihydroxyphenylacetic acid
  • HVA homovanillic acid
  • dopaminergic signalling is primarily regulated by removal of dopamine from the synaptic cleft via rapid uptake by the dopamine transporter (DAT) and/or norepinephrine transporter (NET). Regulation of dopamine transmission in the prefrontal cortex is markedly different. DAT is less densely expressed in synapses within the prefrontal cortex where dopamine is eliminated by uptake through the NET, diffusion, or metabolism by COMT and monoamine oxidase (Mazei et al., 2002; Moron et al., 2002; Lewis et al., 2001; Sesack et al., 1998; Smiley et al., 1994). COMT inhibitors would therefore be predicted to selectively increase cortical dopaminergic signaling and thereby improve cognitive function.
  • the COMT gene is located in the chromosome 22q11.21 region which has been linked to schizophrenia, bipolar disorder, ADHD and substance dependency (Williams, et 2003 and Takahashi et al., 2003).
  • MB-COMT membrane-bound COMT
  • S-COMT soluble COMT
  • COMT activity is modulated by a single nucleotide polymorphism at Val158Met (MB-COMT). Due to differences in enzyme thermostability, homozygous Met carriers have lower COMT activity, heterozygotes exhibit intermediate activity and homozygous Val carriers have greater enzyme activity (Chen et al., 2004). Despite the differences observed in activity based on genotype, only a modest relationship between Val158Met genotype and cognitive performance has been demonstrated by meta-analysis in normal individuals, while no effect was observed in schizophrenia.
  • clozapine, Zyprexa, Risperdal and other anti-psychotic drugs have been useful for the treatment of positive and arguably the negative symptoms of schizophrenia and bipolar disorder, they have not been free from side effects such as agranulocytosis, sedation, weight gain, hyper-lipidemia and hyperglycemia, all of which limit their applications (Tasman et al., 2003; Sadock and Sadock 2005).
  • Such medications might also be used to reduce such symptoms when they occur as part of another psychiatric syndrome or when they are incidental to a neurological disorder.
  • the present invention relates to 4-pyridinone compounds which are inhibitors of catechol O-methyltransferase (COMT) enzyme, and are useful in the treatment and prevention of neurological and psychiatric disorders and diseases in which COMT is involved.
  • COMT catechol O-methyltransferase
  • the present invention also relates to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which COMT enzyme is involved.
  • the present invention further relates to a method of treating symptoms associated with a psychiatric disorder, comprising administration of a pharmacologically effective dose of a composition comprising a 4-pyridinone COMT inhibitor or a pharmaceutically acceptable salt thereof to a patient.
  • the present invention relates to improving negative symptoms and cognitive deficit associated with schizophrenia, augmentation of the effects of anti-psychotics in treatment of positive symptoms of schizophrenia, in treatment of major depression, the depressive phase of bipolar disorder, DA deficiency-related diseases such as ADD/ADHD, and substance dependency (combat cravings associated with and/or addictions to abuse of alcohol, opiates, ***e, marijuana, amphetamines, tobacco).
  • the present invention also relates to a method for the treatment of tobacco addiction and the weight gain/food cravings associated with quitting smoking or the use of antipsychotics.
  • the present invention also relates to a method of enhancing cognition in head injuries and dementias.
  • the present invention relates to novel COMT inhibitors of formula I
  • An embodiment of the present invention is realized when Y is phenyl, said phenyl optionally substituted with 1 to 3 groups of R a and all other variables are as previously described.
  • a subembodiment of this invention is realized when at least one of R a is selected from the group consisting of C 6-10 aryl and C 5-10 heterocyclyl, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of R b .
  • R a is selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]
  • R a is selected from the group consisting of indolyl, pyridyl, phenyl, and indazolyl any of which is optionally substituted with 1 to 3 groups of R b .
  • R b is selected from the group consisting of C 1-6 alkyl, halogen, CHF 2 , N(R 2 ) 2 , CH 2 OH, OR 2 , C 3-6 cycloalkyl, (CH 2 ) n CF 3 , or CN.
  • Another embodiment of this invention is realized when Y is pyridyl, said pyridyl optionally substituted with 1 to 3 groups of R a and all other variables are as previously described.
  • a subembodiment of this invention is realized when at least one of R a is selected from the group consisting of C 6-10 aryl and C 5-10 heterocyclyl, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of R b .
  • R a is selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]
  • R a is selected from the group consisting of indolyl, pyridyl, phenyl, and indazolyl any of which is optionally substituted with 1 to 3 groups of R b .
  • R b is selected from the group consisting of C 1-6 alkyl, halogen, CHF 2 , N(R 2 ) 2 , CH 2 OH, OR 2 , C 3-6 cycloalkyl, (CH 2 ) n CF 3 , or CN.
  • Still another embodiment of this invention is realized when Y is indolyl, said indolyl optionally substituted with 1 to 3 groups of R a and all other variables are as previously described.
  • a subembodiment of this invention is realized when at least one of R a is selected from the group consisting of C 6-10 aryl and C 5-10 heterocyclyl, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of Rb.
  • R a is selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]
  • R a is selected from the group consisting of indolyl, pyridyl, phenyl, and indazolyl any of which is optionally substituted with 1 to 3 groups of R b .
  • R b is selected from the group consisting of C 1-6 alkyl, halogen, CHF 2 , N(R 2 ) 2 , CH 2 OH, OR 2 , C 3-6 cycloalkyl, (CH 2 ) n CF 3 , or CN.
  • Another embodiment of this invention is realized when Y is benzimidazolyl, said benzimidazolyl optionally substituted with 1 to 3 groups of R a and all other variables are as previously described.
  • a subembodiment of this invention is realized when at least one of R a is selected from the group consisting of C 6-10 aryl and C 5-10 heterocyclyl, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of Rb.
  • R a is selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]
  • R a is selected from the group consisting of indolyl, pyridyl, phenyl, and indazolyl any of which is optionally substituted with 1 to 3 groups of R b .
  • R b is selected from the group consisting of C 1-6 alkyl, halogen, CHF 2 , N(R 2 ) 2 , CH 2 OH, OR 2 , C 3-6 cycloalkyl, (CH 2 ) n CF 3 , or CN.
  • Yet another embodiment of this invention is realized when Y is indazolyl, said indazolyl optionally substituted with 1 to 3 groups of R a and all other variables are as previously described.
  • a subembodiment of this invention is realized when at least one of R a is selected from the group consisting of C 6-10 aryl and C 5-10 heterocyclyl, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of Rb.
  • R a is selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]
  • R a is selected from the group consisting of indolyl, pyridyl, phenyl, and indazolyl any of which is optionally substituted with 1 to 3 groups of R b .
  • R b is selected from the group consisting of C 1-6 alkyl, halogen, CHF 2 , N(R 2 ) 2 , CH 2 OH, OR 2 , C 3-6 cycloalkyl, (CH 2 ) n CF 3 , and CN.
  • Still another embodiment of this invention is realized when R 1 is NR 2 R 3 , and all other variables are as originally described.
  • R 1 C 1-10 is alkyl, said alkyl optionally substituted with 1 to 3 groups of halo, OH, O—C 1-6 alkyl, NR 2 R 3 , CF 3 , C 6-10 aryl, C 5-10 heterocyclyl, OC 6-10 aryl, C 1-6 alkenyl, C 3-6 cycloalkyl, C 1-6 alkynyl, —C ⁇ C—C 6-10 aryl, C(O)NR 2 R 3 , NHSO 2 C 6-10 aryl, COOR 2 , C(O)R 2 , cyano, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of R a .
  • R 1 is hydrogen, CH(OH)CH 3 , NH 2 , NHCH 3 , (CHR 2 )nC 6-10 aryl, and (CHR 2 )nC 6-10 heterocyclyl, wherein said aryl and heteroaryl are optionally substituted with 1 to 3 groups of R a .
  • R 1 is hydrogen or CH(OH)CH 3 .
  • Still another embodiment of this invention is realized when X is halo and all other variables are as originally described.
  • R 1 and R a are as originally described.
  • a subembodiment of formula II is realized when R 1 is hydrogen, and all other variables are as originally described.
  • Another subembodiment of formula II is realized when R 1 is NR 2 R 3 , and all other variables are as originally described.
  • R 1 C 1-10 alkyl and all other variables are as originally described, said alkyl optionally substituted with 1 to 3 groups of halo, OH, O—C 1-6 alkyl, NR 2 R 3 , CF 3 , C 6-10 aryl, C 5-10 heterocyclyl, OC 6-10 aryl, C 1-6 alkenyl, C 3-6 cycloalkyl, C 1-6 alkynyl, —C ⁇ C—C 6-10 aryl, C(O)NR 2 R 3 , NHSO 2 C 6-10 aryl, COOR 2 , C(O)R 2 , cyano, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of R a .
  • Still another embodiment of formula II is realized when R 1 is hydrogen, NH 2 , NHCH 3 , and a substituted alkyl selected from CH(OH)CH 3 , (CHR 2 )nC 6-10 aryl, and (CHR 2 )nC 6-10 heterocyclyl, wherein said aryl and heteroaryl are optionally substituted with 1 to 3 groups of R a .
  • R 1 is hydrogen or CH(OH)CH 3 .
  • R a is C 1-6 alkyl, halogen, (CH 2 ) n CF 3 , OR 2 , (CH 2 ) n C 5-10 heterocyclyl, (CH 2 ) n C 6-10 aryl, O(CH 2 ) n C 6-10 aryl, or O(CH 2 ) n C 5-10 heterocyclyl, said alkyl, heterocyclyl and aryl optionally substituted with 1 to 3 groups of R b .
  • R a of formula II is realized when the aryl and heterocyclyl are selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]pyridine; 1
  • R 1 and R a are as originally described.
  • a subembodiment of formula III is realized when R 1 is hydrogen, and all other variables are as originally described.
  • Another subembodiment of formula III is realized when R 1 is NR 2 R 3 , and all other variables are as originally described.
  • R 1 is C 1-10 alkyl and all other variables are as originally described, said alkyl optionally substituted with 1 to 3 groups of halo, OH, O—C 1-6 alkyl, NR 2 R 3 , CF 3 , C 6-10 aryl, C 5-10 heterocyclyl, OC 6-10 aryl, C 1-6 alkenyl, C 3-6 cycloalkyl, C 1-6 alkynyl, —C ⁇ C—C 6-10 aryl, C(O)NR 2 R 3 , NHSO 2 C 6-10 aryl, COOR 2 , C(O)R 2 , cyano, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of R a .
  • Still another embodiment of formula III is realized when R 1 is hydrogen, NH 2 , NHCH 3 , and a substituted alkyl selected from CH(OH)CH 3 , (CHR 2 )nC 6-10 aryl, and (CHR 2 )nC 6-10 heterocyclyl, wherein said aryl and heteroaryl are optionally substituted with 1 to 3 groups of R a .
  • R 1 is hydrogen or CH(OH)CH 3 .
  • R a is C 1-6 alkyl, halogen, (CH 2 ) n CF 3 , OR 2 , (CH 2 ) n C 5-10 heterocyclyl, (CH 2 ) n C 6-10 aryl, O(CH 2 ) n C 6-10 aryl, or O(CH 2 ) n C 5-10 heterocyclyl, said alkyl, heterocyclyl and aryl optionally substituted with 1 to 3 groups of R b .
  • R a of formula III is realized when the aryl and heterocyclyl are selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]pyridine; 1
  • R 1 and R a are as originally described.
  • Another subembodiment of formula IIIa and IIIb is realized when R 1 is hydrogen, and all other variables are as originally described.
  • Still another subembodiment of formula IIIa and IIIb is realized when R 1 is NR 2 R 3 , and all other variables are as originally described.
  • R 1 is C 1-10 alkyl and all other variables are as originally described, said alkyl optionally substituted with 1 to 3 groups of halo, OH, O—C 1-6 alkyl, NR 2 R 3 , CF 3 , C 6-10 aryl, C 5-10 heterocyclyl, OC 6-10 aryl, C 1-6 alkenyl, C 3-6 cycloalkyl, C 1-6 alkynyl, —C ⁇ C—C6-10 aryl, C(O)NR 2 R 3 , NHSO 2 C 6-10 aryl, COOR 2 , C(O)R 2 , cyano, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of R a .
  • Still another embodiment of formula IIIa and IIIb is realized when R 1 is hydrogen, NH 2 , NHCH 3 , and a substituted alkyl selected from CH(OH)CH 3 , (CHR 2 ) n C 6-10 aryl, and (CHR 2 ) n C 6-10 heterocyclyl, wherein said aryl and heteroaryl are optionally substituted with 1 to 3 groups of R a .
  • R 1 is hydrogen or CH(OH)CH 3 .
  • R a is C 1-6 alkyl, halogen, (CH 2 ) n CF 3 , OR 2 , (CH 2 ) n C 5-10 heterocyclyl, (CH 2 ) n C 6-10 aryl, O(CH 2 ) n C 6-10 aryl, or O(CH 2 ) n C 5-10 heterocyclyl, said alkyl, heterocyclyl and aryl optionally substituted with 1 to 3 groups of R b .
  • R a of formula IIIa and IIIb is realized when the aryl and heterocyclyl are selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]
  • R 1 and R a are as originally described.
  • a subembodiment of formula IV is realized when R 1 is hydrogen, and all other variables are as originally described.
  • Another subembodiment of formula IV is realized when R 1 is NR 2 R 3 , and all other variables are as originally described.
  • R 1 is C 1-10 alkyl and all other variables are as originally described, said alkyl optionally substituted with 1 to 3 groups of halo, OH, O—C 1-6 alkyl, NR 2 R 3 , CF 3 , C 6-10 aryl, C 5-10 heterocyclyl, OC 6-10 aryl, C 1-6 alkenyl, C 3-6 cycloalkyl, C 1-6 alkynyl, —C ⁇ C—C6-10 aryl, C(O)NR 2 R 3 , NHSO 2 C 6-10 aryl, COOR 2 , C(O)R 2 , cyano, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of R a .
  • Still another embodiment of formula IV is realized when R 1 is hydrogen, NH 2 , NHCH 3 , and a substituted alkyl selected from CH(OH)CH 3 , (CHR 2 )nC 6-10 aryl, and (CHR 2 )nC 6-10 heterocyclyl, wherein said aryl and heteroaryl are optionally substituted with 1 to 3 groups of R a .
  • R 1 is hydrogen or CH(OH)CH 3 .
  • R a is C 1-6 alkyl, halogen, (CH 2 ) n CF 3 , OR 2 , (CH 2 ) n C 5-10 heterocyclyl, (CH 2 ) n C 6-10 aryl, O(CH 2 ) n C 6-10 aryl, or O(CH 2 ) n C 5-10 heterocyclyl, said alkyl, heterocyclyl and aryl optionally substituted with 1 to 3 groups of R b .
  • R a of formula IV is realized when the aryl and heterocyclyl are selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]pyridine; 1
  • R 1 and R a are as originally described.
  • a subembodiment of formula V is realized when R 1 is hydrogen, and all other variables are as originally described.
  • Another subembodiment of formula V is realized when R 1 is NR 2 R 3 , and all other variables are as originally described.
  • R 1 is C 1-10 alkyl and all other variables are as originally described, said alkyl a optionally substituted with 1 to 3 groups of halo, OH, O—C 1-6 alkyl, NR 2 R 3 , CF 3 , C 6-10 aryl, C 5-10 heterocyclyl, OC 6-10 aryl, C 1-6 alkenyl, C 3-6 cycloalkyl, C 1-6 alkynyl, —C ⁇ C—C 6-10 aryl, C(O)NR 2 R 3 , NHSO 2 C 6-10 aryl, COOR 2 , C(O)R 2 , cyano, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of R a .
  • Still another embodiment of formula V is realized when R 1 is hydrogen, NH 2 , NHCH 3 , and a substituted alkyl selected from CH(OH)CH 3 , (CHR 2 )nC 6-10 aryl, and (CHR 2 )nC 6-10 heterocyclyl, wherein said aryl and heteroaryl are optionally substituted with 1 to 3 groups of R a .
  • R 1 is hydrogen or CH(OH)CH 3 .
  • R a is C 1-6 alkyl, halogen, (CH 2 ) n CF 3 , OR 2 , (CH 2 ) n C 5-10 heterocyclyl, (CH 2 ) n C 6-10 aryl, O(CH 2 ) n C 6-10 aryl, or O(CH 2 ) n C 5-10 heterocyclyl, said alkyl, heterocyclyl and aryl optionally substituted with 1 to 3 groups of R b .
  • R a of formula V is realized when the aryl and heterocyclyl are selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]pyridine; 1
  • R 1 and R a are as originally described.
  • a subembodiment of formula VI is realized when R 1 is hydrogen, and all other variables are as originally described.
  • Another subembodiment of formula VI is realized when R 1 is NR 2 R 3 , and all other variables are as originally described.
  • R 1 is C 1-10 alkyl and all other variables are as originally described, said alkyl optionally substituted with 1 to 3 groups of halo, OH, O—C 1-6 alkyl, NR 2 R 3 , CF 3 , C 6-10 aryl, C 5-10 heterocyclyl, OC 6-10 aryl, C 1-6 alkenyl, C 3-6 cycloalkyl, C 1-6 alkynyl, —C ⁇ C—C 6-10 aryl, C(O)NR 2 R 3 , NHSO 2 C 6-10 aryl, COOR 2 , C(O)R 2 , cyano, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of R a .
  • Still another embodiment of formula VI is realized when R 1 is hydrogen, NH 2 , NHCH 3 , and a substituted alkyl selected from CH(OH)CH 3 , (CHR 2 ) n C 6-10 aryl, and (CHR 2 ) n C 6-10 heterocyclyl, wherein said aryl and heteroaryl are optionally substituted with 1 to 3 groups of R a .
  • R 1 is hydrogen or CH(OH)CH 3 .
  • R a is C 1-6 alkyl, halogen, (CH 2 ) n CF 3 , OR 2 , (CH 2 ) n C 5-10 heterocyclyl, (CH 2 ) n C 6-10 aryl, O(CH 2 ) n C 6-10 aryl, or O(CH 2 ) n C 5-10 heterocyclyl, said alkyl, heterocyclyl and aryl optionally substituted with 1 to 3 groups of R b .
  • R a of formula VI is realized when the aryl and heterocyclyl are selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]pyridine; 1
  • R 1 is C 1-10 alkyl and all other variables are as originally described, said alkyl optionally substituted with 1 to 3 groups of halo, OH, O—C 1-6 alkyl, NR 2 R 3 , CF 3 , C 6-10 aryl, C 5-10 heterocyclyl, OC 6-10 aryl, C 1-6 alkenyl, C 3-6 cycloalkyl, C 1-6 alkynyl, —C ⁇ C—C 6-10 aryl, C(O)NR 2 R 3 , NHSO 2 C 6-10 aryl, COOR 2 , C(O)R 2 , cyano, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of R a .
  • Still another embodiment of formula VII is realized when R 1 is hydrogen, NH 2 , NHCH 3 , and a substituted alkyl selected from CH(OH)CH 3 , (CHR 2 )nC 6-10 aryl, and (CHR 2 )nC 6-10 heterocyclyl, wherein said aryl and heteroaryl are optionally substituted with 1 to 3 groups of R a .
  • R 1 is hydrogen or CH(OH)CH 3 .
  • R a is C 1-6 alkyl, halogen, (CH 2 ) n CF 3 , OR 2 , (CH 2 ) n C 5-10 heterocyclyl, (CH 2 ) n C 6-10 aryl, O(CH 2 ) n C 6-10 aryl, or O(CH 2 ) n C 5-10 heterocyclyl, said alkyl, heterocyclyl and aryl optionally substituted with 1 to 3 groups of R b .
  • R a of formula VII is realized when the aryl and heterocyclyl are selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]pyridine; 1
  • R a can be attached to a carbon or nitrogen atom on the ring, and R 1 and R a are as originally described.
  • R 1 can be attached to a carbon or nitrogen atom on the ring, and R 1 and R a are as originally described.
  • a subembodiment of formula VIII is realized when R 1 is hydrogen, and all other variables are as originally described.
  • Another subembodiment of formula VIII is realized when R 1 is NR 2 R 3 , and all other variables are as originally described.
  • R 1 is C 1-10 alkyl and all other variables are as originally described, said alkyl optionally substituted with 1 to 3 groups of halo, OH, O—C 1-6 alkyl, NR 2 R 3 , CF 3 , C 6-10 aryl, C 5-10 heterocyclyl, OC 6-10 aryl, C 1-6 alkenyl, C 3-6 cycloalkyl, C 1-6 alkynyl, —C ⁇ C—C 6-10 aryl, C(O)NR 2 R 3 , NHSO 2 C 6-10 aryl, COOR 2 , C(O)R 2 , cyano, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of R a .
  • Still another embodiment of formula VIII is realized when R 1 is hydrogen, NH 2 , NHCH 3 , and a substituted alkyl selected from CH(OH)CH 3 , (CHR 2 )nC 6-10 aryl, and (CHR 2 )nC 6-10 heterocyclyl, wherein said aryl and heteroaryl are optionally substituted with 1 to 3 groups of R a .
  • R 1 is hydrogen or CH(OH)CH 3 .
  • R a is C 1-6 alkyl, halogen, (CH 2 ) n CF 3 , OR 2 , (CH 2 ) n C 5-10 heterocyclyl, (CH 2 ) n C 6-10 aryl, O(CH 2 ) n C 6-10 aryl, or O(CH 2 ) n C 5-10 heterocyclyl, said alkyl, heterocyclyl and aryl optionally substituted with 1 to 3 groups of R b .
  • R a of formula VIII is realized when the aryl and heterocyclyl are selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]pyridine; 1
  • R a can be attached to a carbon or nitrogen atom on the ring, and R 1 and R a are as originally described.
  • R 1 can be attached to a carbon or nitrogen atom on the ring, and R 1 and R a are as originally described.
  • a subembodiment of formula IX is realized when R 1 is hydrogen, and all other variables are as originally described.
  • Another subembodiment of formula IX is realized when R 1 is NR 2 R 3 , and all other variables are as originally described.
  • R 1 is C 1-10 alkyl and all other variables are as originally described, said alkyl optionally substituted with 1 to 3 groups of halo, OH, O—C 1-6 alkyl, NR 2 R 3 , CF 3 , C 6-10 aryl, C 5-10 heterocyclyl, OC 6-10 aryl, C 1-6 alkenyl, C 3-6 cycloalkyl, C 1-6 alkynyl, —C ⁇ C—C6-10 aryl, C(O)NR 2 R 3 , NHSO 2 C 6-10 aryl, COOR 2 , C(O)R 2 , cyano, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of R a .
  • Still another embodiment of formula IX is realized when R 1 is hydrogen, NH 2 , NHCH 3 , and a substituted alkyl selected from CH(OH)CH 3 , (CHR 2 )nC 6-10 aryl, and (CHR 2 )nC 6-10 heterocyclyl, wherein said aryl and heteroaryl are optionally substituted with 1 to 3 groups of R a .
  • R 1 is hydrogen or CH(OH)CH 3 .
  • R a is C 1-6 alkyl, halogen, (CH 2 ) n CF 3 , OR 2 , (CH 2 ) n C 5-10 heterocyclyl, (CH 2 ) n C 6-10 aryl, O(CH 2 ) n C 6-10 aryl, or O(CH 2 ) n C 5-10 heterocyclyl, said alkyl, heterocyclyl and aryl optionally substituted with 1 to 3 groups of R b .
  • R a of formula IX is realized when the aryl and heterocyclyl are selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]pyridine;
  • R a can be attached to a carbon or nitrogen atom on the ring, and R 1 and R a are as originally described.
  • R 1 can be attached to a carbon or nitrogen atom on the ring, and R 1 and R a are as originally described.
  • a subembodiment of formula X is realized when R 1 is hydrogen, and all other variables are as originally described.
  • Another subembodiment of formula X is realized when R 1 is NR 2 R 3 , and all other variables are as originally described.
  • R 1 is C 1-10 alkyl and all other variables are as originally described, said alkyl optionally substituted with 1 to 3 groups of halo, OH, O—C 1-6 alkyl, NR 2 R 3 , CF 3 , C 6-10 aryl, C 5-10 heterocyclyl, OC 6-10 aryl, C 1-6 alkenyl, C 3-6 cycloalkyl, C 1-6 alkynyl, —C ⁇ C—C 6-10 aryl, C(O)NR 2 R 3 , NHSO 2 C 6-10 aryl, COOR 2 , C(O)R 2 , cyano, said aryl and heterocyclyl optionally substituted with 1 to 3 groups of R a .
  • Still another embodiment of formula X is realized when R 1 is hydrogen, NH 2 , NHCH 3 , and a substituted alkyl selected from CH(OH)CH 3 , (CHR 2 ) n C 6-10 aryl, and (CHR 2 ) n C 6-10 heterocyclyl, wherein said aryl and heteroaryl are optionally substituted with 1 to 3 groups of R a .
  • R 1 is hydrogen or CH(OH)CH 3 .
  • R a is C 1-6 alkyl, halogen, (CH 2 ) n CF 3 , OR 2 , (CH 2 ) n C 5-10 heterocyclyl, (CH 2 ) n C 6-10 aryl, O(CH 2 ) n C 6-10 aryl, or O(CH 2 ) n C 5-10 heterocyclyl, said alkyl, heterocyclyl and aryl optionally substituted with 1 to 3 groups of R b .
  • R a of formula X is realized when the aryl and heterocyclyl are selected from the group consisting of naphthyridine, indolyl, pyrazolyl, benzodioxaolyl, pyridyl, furopyridinyl, isoindolyl, pyridooxazinyl, imidazolyl, pyrrolyl, pyrrolopyridinyl, thiophenyl, isoxazolyl, pyrimidinyl, quinoxalinyl, quinazolinyl, quinolinyl, isoquinolinyl, phenyl, indazolyl, [1,2,4]triazolo[1,5-a]pyridine; 1,2,3,4-tetrahydroisoquinoline; 1,3-benzodioxole; 1-benzothiophene; 1H-indazole; 1H-pyrrolo[2,3-b]pyridine;
  • variable e.g. aryl, heterocycle, R 1 , R 5 etc.
  • its definition on each occurrence is independent at every other occurrence.
  • combinations of substituents/or variables are permissible only if such combinations result in stable compounds.
  • Rgroup When an Rgroup is —O— and attached to a carbon it is referred to as a carbonyl group and when it is attached to a nitrogen (e.g., nitrogen atom on a pyridyl group) or sulfur atom it is referred to a N-oxide and sulfoxide group, respectively.
  • a nitrogen e.g., nitrogen atom on a pyridyl group
  • sulfur atom it is referred to a N-oxide and sulfoxide group, respectively.
  • alkyl encompasses groups having the prefix “alk” such as, for example, alkoxy, alkanoyl, alkenyl, and alkynyl and means carbon chains which may be linear or branched or combinations thereof. Examples of alkyl groups include methyl, ethyl, propyl, isopropyl, butyl, sec- and tert-butyl, pentyl, hexyl, and heptyl. “Alkenyl” refers to a hydrocarbon radical straight, branched or cyclic containing from 2 to 10 carbon atoms and at least one carbon to carbon double bond.
  • alkenyl groups include ethenyl, propenyl, butenyl and cyclohexenyl.
  • alkenyl is C 2 -C 6 alkenyl.
  • Preferred alkynyls are C 2 -C 6 alkynyl.
  • Alkenyl “alkynyl” and other like terms include carbon chains containing at least one unsaturated C—C bond.
  • fluoroalkyl refers to an alkyl group as described herin containing at least one fluorine substituent.
  • cycloalkyl refers to a saturated hydrocarbon containing one ring having a specified number of carbon atoms.
  • examples of cycloalkyl include cyclopropyl, cyclobutyl, cyclopentyl, and cyclohexyl.
  • C 1-6 includes alkyls containing 6, 5, 4, 3, 2, or 1 carbon atoms
  • alkoxy as used herein, alone or in combination, includes an alkyl group connected to the oxy connecting atom.
  • alkoxy also includes alkyl ether groups, where the term ‘alkyl’ is defined above, and ‘ether’ means two alkyl groups with an oxygen atom between them.
  • suitable alkoxy groups include methoxy, ethoxy, n-propoxy, i-propoxy, n-butoxy, s-butoxy, t-butoxy, methoxymethane (also referred to as ‘dimethyl ether’), and methoxyethane (also referred to as ‘ethyl methyl ether’).
  • aryl is intended to mean any stable monocyclic or bicyclic carbon ring of up to 7 members in each ring, wherein at least one ring is aromatic. Examples of such aryl elements include phenyl, napthyl, tetrahydronapthyl, indanyl, or biphenyl.
  • heterocycle, heterocyclyl, or heterocyclic represents a stable 5- to 7-membered monocyclic or stable 8- to 11-membered bicyclic heterocyclic ring which is either saturated or unsaturated, and which consists of carbon atoms and from one to four heteroatoms selected from the group consisting of N, O, and S, and including any bicyclic group in which any of the above-defined heterocyclic rings is fused to a benzene ring.
  • the heterocyclic ring may be attached at any heteroatom or carbon atom which results in the creation of a stable structure.
  • heterocycle or heterocyclic includes heteroaryl moieties.
  • heterocyclic elements include, but are not limited to, azepinyl, benzimidazolyl, benzisoxazolyl, benzofurazanyl, benzopyranyl, benzothiopyranyl, benzofuryl, benzothiazolyl, benzothienyl, benzoxazolyl, chromanyl, cinnolinyl, dihydrobenzofuryl, dihydrobenzothienyl, dihydrobenzothiopyranyl, dihydrobenzothiopyranyl sulfone, 1,3-dioxolanyl, furyl, imidazolidinyl, imidazolinyl, imidazolyl, indolinyl, indolyl, isochromanyl, isoindolinyl, isoquinolinyl, isothiazolidinyl, isothiazolyl, isothiazolidinyl, morpholinyl, naphthyrid
  • the heterocyclic group is a heteroaryl group.
  • heteroaryl refers to groups having 5 to 14 ring atoms, preferably 5, 6, 9, or 10 ring atoms; having 6, 10, or 14 ⁇ electrons shared in a cyclic array; and having, in addition to carbon atoms, between one and about three heteroatoms selected from the group consisting of N, O, and S which may be saturated, such as piperidinyl, partially saturated, or unsaturated, such as pyridinyl, and wherein the nitrogen and sulfur heteroatoms may optionally be oxidized, and the nitrogen heteroatom may optionally be quaternized, and including any bicyclic group in which any of the above-defined heterocyclic rings is fused to a benzene ring.
  • the heterocyclic ring may be attached at any heteroatom or carbon atom which results in the creation of a stable structure.
  • heteroaryl groups include, but are not limited to, benzimidazole, benzisothiazole, benzisoxazole, benzofuran, benzothiazole, benzothiophene, benzotriazole, benzoxazole, carboline, cinnoline, furan, furazan, imidazole, indazole, indole, indolizine, isoquinoline, isothiazole, isoxazole, naphthyridine, oxadiazole, oxazole, phthalazine, pteridine, purine, pyran, pyrazine, pyrazole, pyridazine, pyridine, pyrimidine, pyrrole, quinazoline, quinoline, quinoxaline, tetrazole, thiadiazole, thiazole,
  • the heterocyclic group is fused to an aryl or heteroaryl group.
  • fused heterocycles include, without limitation, tetrahydroquinolinyl and dihydrobenzofuranyl.
  • heterocycloalkyls examples include azetidinyl, pyrrolidinyl, piperidinyl, piperazinyl, morpholinyl, tetrahydrofuranyl, imidazolinyl, pyrrolidin-2-one, piperidin-2-one, and thiomorpholinyl.
  • heteroatom means O, S or N, selected on an independent basis.
  • a moiety that is substituted is one in which one or more hydrogens have been independently replaced with another chemical substituent.
  • substituted phenyls include 2-fluorophenyl, 3,4-dichlorophenyl, 3-chloro-4-fluoro-phenyl, 2,4-fluor-3-propylphenyl.
  • substituted n-octyls include 2,4dimethyl-5-ethyl-octyl and 3-cyclopentyloctyl. Included within this definition are methylenes (—CH 2 —) substituted with oxygen to form carbonyl (—CO—).
  • a moiety e.g., cycloalkyl, hydrocarbyl, aryl, alkyl, heteroaryl, heterocyclic, urea, etc.
  • a moiety e.g., cycloalkyl, hydrocarbyl, aryl, alkyl, heteroaryl, heterocyclic, urea, etc.
  • the group optionally has from one to four, preferably from one to three, more preferably one or two, non-hydrogen substituents.
  • Suitable substituents include, without limitation, halo, hydroxy, oxo (e.g., an annular —CH— substituted with oxo is —C(O)—), nitro, halohydrocarbyl, hydrocarbyl, aryl, aralkyl, alkoxy, aryloxy, amino, acylamino, alkylcarbamoyl, arylcarbamoyl, aminoalkyl, acyl, carboxy, hydroxyalkyl, alkanesulfonyl, arenesulfonyl, alkanesulfonamido, arenesulfonamido, aralkylsulfonamido, alkylcarbonyl, acyloxy, cyano, and ureido groups.
  • Preferred substituents, which are themselves not further substituted are:
  • Halogen and “halo” refer to fluorine, chlorine, bromine and iodine.
  • mammal “mammalian” or “mammals” includes humans, as well as animals, such as dogs, cats, horses, pigs and cattle.
  • phrases “effective amount” or “therapeutically effective amount” mean a concentration of COMT enzyme complex modulator sufficient to inhibit or enhance the effect of the COMT enzyme complex.
  • Treating” or “treatment of” a disease state includes: 1) preventing the disease state, i.e. causing the clinical symptoms of the disease state not to develop in a subject that may be exposed to or predisposed to the disease state, but does not yet experience or display symptoms of the disease state; 2) inhibiting the disease state, i.e., arresting the development of the disease state or its clinical symptoms; 3) or relieving the disease state, i.e., causing temporary or permanent regression of the disease state or its clinical symptoms.
  • the compounds of the present invention may contain one or more asymmetric centers and may thus occur as racemates, racemic mixtures, single enantiomers, diastereomeric mixtures, and individual diastereomers.
  • the atoms may exhibit their natural isotopic abundances, or one or more of the atoms may be artificially enriched in a particular isotope having the same atomic number, but an atomic mass or mass number different from the atomic mass or mass number predominantly found in nature.
  • the present invention is meant to include all suitable isotopic variations of the compounds of generic Formula I.
  • different isotopic forms of hydrogen (H) include protium ( 1 H) and deuterium ( 2 H).
  • Protium is the predominant hydrogen isotope found in nature. Enriching for deuterium may afford certain therapeutic advantages, such as increasing in vivo half-life or reducing dosage requirements, or may provide a compound useful as a standard for characterization of biological samples.
  • Isotopically-enriched compounds within generic Formula I can be prepared without undue experimentation by conventional techniques well known to those skilled in the art or by processes analogous to those described in the Schemes and Examples herein using appropriate isotopically-enriched reagents and/or intermediates.
  • references to the compounds of structural formula I are meant to also include the pharmaceutically acceptable salts, and also salts that are not pharmaceutically acceptable when they are used as precursors to the free compounds or in other synthetic manipulations.
  • the compounds of the present invention may be administered in the form of a pharmaceutically acceptable salt.
  • pharmaceutically acceptable salts refers to salts prepared from pharmaceutically acceptable non-toxic bases or acids.
  • inorganic bases and organic bases include aluminum, ammonium, calcium, copper (ic and ous), ferric, ferrous, lithium, magnesium, manganese (ic and ous), potassium, sodium, zinc and the like salts.
  • Salts derived from pharmaceutically acceptable organic non-toxic bases include salts of primary, secondary, and tertiary amines, as well as cyclic amines and substituted amines such as naturally occurring and synthesized substituted amines.
  • Other pharmaceutically acceptable organic non-toxic bases from which salts can be formed include ion exchange resins such as, for example, arginine, betaine, caffeine, choline, N,N′-dibenzylethylenediamine, diethylamine, 2-diethylaminoethanol, 2-dimethylaminoethanol, ethanolamine, ethylenediamine, N-ethylmorpholine, N-ethylpiperidine, glucamine, glucosamine, histidine, hydrabamine, isopropylamine, lysine, methylglucamine, morpholine, piperazine, piperidine, polyamine resins, procaine, purines, theobromine, triethylamine, trimethylamine,
  • the compound of the present invention When the compound of the present invention is basic, its corresponding salt can be conveniently prepared from pharmaceutically acceptable non-toxic acids, including inorganic and organic acids.
  • acids include, for example, acetic, benzenesulfonic, benzoic, camphorsulfonic, citric, ethanesulfonic, fumaric, gluconic, glutamic, hydrobromic, hydrochloric, isethionic, lactic, maleic, malic, mandelic, methanesulfonic, mucic, nitric, pamoic, pantothenic, phosphoric, succinic, sulfuric, tartaric, p-toluenesulfonic acid and the like.
  • compounds of the present invention provide a method for treating schizophrenia or psychosis comprising administering to a patient in need thereof an effective amount of a compound of the present invention.
  • the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR) (2000, American Psychiatric Association, Washington D.C.) provides a diagnostic tool that includes paranoid, disorganized, catatonic or undifferentiated schizophrenia and substance-induced psychotic disorders.
  • DSM-IV-TR The Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR) (2000, American Psychiatric Association, Washington D.C.) provides a diagnostic tool that includes paranoid, disorganized, catatonic or undifferentiated schizophrenia and substance-induced psychotic disorders.
  • the term “schizophrenia or psychosis” includes the diagnosis and classification of these mental disorders as described in DSM-IV-TR and the term is intended to include similar disorders described in other sources.
  • Disorders and conditions encompassed herein include, but are not limited to, conditions or diseases such as schizophrenia or psychosis, including schizophrenia (paranoid, disorganized, catatonic, undifferentiated, or residual type), schizophreniform disorder, schizoaffective disorder, for example of the delusional type or the depressive type, delusional disorder, psychotic disorder, brief psychotic disorder, shared psychotic disorder, psychotic disorder due to a general medical condition and substance-induced or drug-induced (for example psychosis induced by alcohol, amphetamine, cannabis, ***e, hallucinogens, inhalants, opioids, phencyclidine, ketamine and other dissociative anaesthetics, and other psychostimulants), psychosispsychotic disorder, psychosis associated with affective disorders, brief reactive psychosis, schizoaffective psychosis, “schizophrenia-spectrum” disorders such as schizoid or schizotypal personality disorders, personality disorder of the paranoid type, personality disorder of the schizo
  • the compounds of the present invention provide a method for treating cognitive disorders comprising administering to a patient in need thereof an effective amount of a compound of the present invention.
  • the DSM-IV-TR also provides a diagnostic tool that includes cognitive disorders including dementia, delirium, amnestic disorders and age-related cognitive decline.
  • cognitive disorders includes the diagnosis and classification of these disorders as described in DSM-IV-TR and the term is intended to include similar disorders described in other sources.
  • disorders and conditions encompassed herein include, but are not limited to, disorders that comprise as a symptom a deficiency in attention and/or cognition, such as dementia (associated with Alzheimer's disease, ischemia, multi-infarct dementia, trauma, intracranial tumors, cerebral trauma, vascular problems or stroke, alcoholic dementia or other drug-related dementia, AIDS, HIV disease, Parkinson's disease, Huntington's disease, Pick's disease, Creutzfeldt Jacob disease, perinatal hypoxia, other general medical conditions or substance abuse), Alzheimer's disease, multi-infarct dementia, AIDS-related dementia, and Fronto temperal dementia, delirium, amnestic disorders or age related cognitive decline.
  • dementia associated with Alzheimer's disease, ischemia, multi-infarct dementia, trauma, intracranial tumors, cerebral trauma, vascular problems or stroke
  • alcoholic dementia or other drug-related dementia AIDS
  • HIV disease Parkinson's disease
  • Huntington's disease Huntington's disease
  • Pick's disease Creutzfeldt Jacob disease
  • compounds of the present invention provide a method for treating anxiety disorders comprising administering to a patient in need thereof an effective amount of a compound of the present invention.
  • the DSM-IV-TR also provides a diagnostic tool that includes anxiety disorders as generalized anxiety disorder, obsessive-compulsive disorder and panic attack.
  • anxiety disorders includes the diagnosis and classification of these mental disorders as described in DSM-IV-TR and the term is intended to include similar disorders described in other sources.
  • Disorders and conditions encompassed herein include, but are not limited to, anxiety disorders such as, acute stress disorder, agoraphobia, generalized anxiety disorder, obsessive-compulsive disorder, panic attack, panic disorder, post-traumatic stress disorder, separation anxiety disorder, social phobia, specific phobia, substance-induced anxiety disorder and anxiety due to a general medical condition.
  • anxiety disorders such as, acute stress disorder, agoraphobia, generalized anxiety disorder, obsessive-compulsive disorder, panic attack, panic disorder, post-traumatic stress disorder, separation anxiety disorder, social phobia, specific phobia, substance-induced anxiety disorder and anxiety due to a general medical condition.
  • compounds of the present invention provide a method for treating substance-related disorders and addictive behaviors comprising administering to a patient in need thereof an effective amount of a compound of the present invention.
  • the DSM-IV-TR also provides a diagnostic tool that includes persisting dementia, persisting amnestic disorder, psychotic disorder or anxiety disorder induced by substance abuse, and tolerance of, dependence on or withdrawal from substances of abuse.
  • the term “substance-related disorders and addictive behaviors” includes the diagnosis and classification of these mental disorders as described in DSM-IV-TR and the term is intended to include similar disorders described in other sources.
  • Disorders and conditions encompassed herein include, but are not limited to, substance-related disorders and addictive behaviors, such as substance-induced delirium, persisting dementia, persisting amnestic disorder, psychotic disorder or anxiety disorder, drug addiction, tolerance, and dependence or withdrawal from substances including alcohol, amphetamines, cannabis, ***e, hallucinogens, inhalants, nicotine, opioids, phencyclidine, sedatives, hypnotics or anxiolytics.
  • substance-related disorders and addictive behaviors such as substance-induced delirium, persisting dementia, persisting amnestic disorder, psychotic disorder or anxiety disorder, drug addiction, tolerance, and dependence or withdrawal from substances including alcohol, amphetamines, cannabis, ***e, hallucinogens, inhalants, nicotine, opioids, phencyclidine, sedatives, hypnotics or anxiolytics.
  • compounds of the present invention provide a method for treating obesity or eating disorders associated with excessive food intake, and complications associated therewith, comprising administering to a patient in need thereof an effective amount of a compound of the present invention.
  • obesity is included in the tenth edition of the International Classification of Diseases and Related Health Problems (ICD-10) (1992 World Health Organization) as a general medical condition.
  • the DSM-IV-TR also provides a diagnostic tool that includes obesity in the presence of psychological factors affecting medical condition.
  • the term “obesity or eating disorders associated with excessive food intake” includes the diagnosis and classification of these medical conditions and disorders described in ICD-10 and DSM-IV-TR and the term is intended to include similar disorders described in other sources. Disorders and conditions encompassed herein include, but are not limited to, obesity, bulimia nervosa and compulsive eating disorders.
  • compounds of the present invention provide a method for treating mood and depressive disorders comprising administering to a patient in need thereof an effective amount of a compound of the present invention.
  • mood and depressive disorders includes the diagnosis and classification of these medical conditions and disorders described in the DSM-IV-TR and the term is intended to include similar disorders described in other sources.
  • disorders and conditions encompassed herein include, but are not limited to, bipolar disorders, mood disorders including depressive disorders, major depressive episode of the mild, moderate or severe type, a manic or mixed mood episode, a hypomanic mood episode, a depressive episode with atypical features, a depressive episode with melancholic features, a depressive episode with catatonic features, a mood episode with postpartum onset, post-stroke depression; major depressive disorder, dysthymic disorder, minor depressive disorder, premenstrual dysphoric disorder, post-psychotic depressive disorder of schizophrenia, a major depressive disorder superimposed on a psychotic disorder such as delusional disorder or schizophrenia, a bipolar disorder, for example, bipolar I disorder, bipolar II disorder, cyclothymic disorder, depression including unipolar depression, seasonal depression and post-partum depression, premenstrual syndrome (PMS) and premenstrual dysphoric disorder (PDD), mood disorders due to a general medical condition, and substance-induced mood disorders.
  • a bipolar disorder
  • compounds of the present invention provide a method for treating pain comprising administering to a patient in need thereof an effective amount of a compound of the present invention.
  • pain embodiments are bone and joint pain (osteoarthritis), repetitive motion pain, dental pain, cancer pain, myofascial pain (muscular injury, fibromyalgia), perioperative pain (general surgery, gynecological), chronic pain and neuropathic pain.
  • compounds of the invention provide methods for treating other types of cognitive, learning and mental related disorders including, but not limited to, learning disorders, such as a reading disorder, a mathematics disorder, or a disorder of written expression, attention-deficit/hyperactivity disorder, age-related cognitive decline, pervasive developmental disorder including autistic disorder, attention disorders such as attention-deficit hyperactivity disorder (ADHD) and conduct disorder; an NMDA receptor-related disorder, such as autism, depression, benign forgetfulness, childhood learning disorders and closed head injury; a neurodegenerative disorder or condition, such as neurodegeneration associated with cerebral trauma, stroke, cerebral infarct, epileptic seizure, neurotoxin poisoning, or hypoglycemia-induced neurodegeneration; multi-system atrophy; movement disorders, such as akinesias and akinetic-rigid syndromes (including, Parkinson's disease, drug-induced parkinsonism, post-encephalitic parkinsonism, progressive supranuclear palsy, multiple system atrophy, corticobas
  • schizophrenia bipolar disorder
  • depression including unipolar depression, seasonal depression and post-partum depression
  • premenstrual syndrome PMS
  • premenstrual dysphoric disorder PDD
  • learning disorders pervasive developmental disorders, including autistic disorder, attention disorders including Attention-Deficit/Hyperactivity Disorder, autism, tic disorders including Tourette's disorder, anxiety disorders including phobia and post traumatic stress disorder, cognitive disorders associated with dementia, AIDS dementia, Alzheimer's, Parkinson's, Huntington's disease, spasticity, myoclonus, muscle spasm, tinnitus and hearing impairment and loss are of particular importance.
  • the subject compounds are further useful in a method for the prevention, treatment, control, amelioration, or reduction of risk of the diseases, disorders and conditions noted herein.
  • compounds of the present invention provide a method for treating Parkinson's disease when co-administered with L-DOPA, with or without a aromatic L-amino acid decarboxylase inhibitor (AADC) such as carbidopa, by preventing COMT—mediated metabolism of L-DOPA
  • AADC aromatic L-amino acid decarboxylase inhibitor
  • the subject compounds are further useful in a method for the prevention, treatment, control, amelioration, or reduction of risk of the aforementioned diseases, disorders and conditions in combination with other agents.
  • the compounds of the present invention may be used in combination with one or more other drugs in the treatment, prevention, control, amelioration, or reduction of risk of diseases or conditions for which compounds of the present invention or the other drugs may have utility, where the combination of the drugs together are safer or more effective than either drug alone.
  • Such other drug(s) may be administered, by a route and in an amount commonly used therefor, contemporaneously or sequentially with a compound of the present invention.
  • a pharmaceutical composition in unit dosage form containing such other drugs and the compound of the present invention may be desirable.
  • the combination therapy may also include therapies in which the compound of the present invention and one or more other drugs are administered on different overlapping schedules. It is also contemplated that when used in combination with one or more other active ingredients, the compounds of the present invention and the other active ingredients may be used in lower doses than when each is used singly. Accordingly, the pharmaceutical compositions of the present invention include those that contain one or more other active ingredients, in addition to a compound of the present invention. The above combinations include combinations of a compound of the present invention not only with one other active compound, but also with two or more other active compounds. Likewise, compounds of the present invention may be used in combination with other drugs that are used in the prevention, treatment, control, amelioration, or reduction of risk of the diseases or conditions for which compounds of the present invention are useful.
  • the pharmaceutical compositions of the present invention include those that also contain one or more other active ingredients, in addition to a compound of the present invention.
  • the weight ratio of the compound of the present invention to the second active ingredient may be varied and will depend upon the effective dose of each ingredient. Generally, an effective dose of each will be used.
  • the weight ratio of the compound of the present invention to the other agent will generally range from about 1000:1 to about 1:1000, such as about 200:1 to about 1:200.
  • Combinations of a compound of the present invention and other active ingredients will generally also be within the aforementioned range, but in each case, an effective dose of each active ingredient should be used.
  • the compound of the present invention and other active agents may be administered separately or in conjunction.
  • the administration of one element may be prior to, concurrent to, or subsequent to the administration of other agent(s).
  • the subject compounds may be used alone or in combination with other agents which are known to be beneficial in the subject indications or other drugs that affect receptors or enzymes that either increase the efficacy, safety, convenience, or reduce unwanted side effects or toxicity of the compounds of the present invention.
  • the subject compound and the other agent may be co-administered, either in concomitant therapy or in a fixed combination.
  • the subject compound may be employed in combination with anti-Alzheimer's agents, beta-secretase inhibitors, gamma-secretase inhibitors, HMG-CoA reductase inhibitors, NSAID's including ibuprofen, vitamin E, and anti-amyloid antibodies.
  • the subject compound may be employed in combination with sedatives, hypnotics, anxiolytics, antipsychotics, antianxiety agents, cyclopyrrolones, imidazopyridines, pyrazolopyrimidines, minor tranquilizers, melatonin agonists and antagonists, melatonergic agents, benzodiazepines, barbiturates, 5HT-2 antagonists, and the like, such as: adinazolam, allobarbital, alonimid, alprazolam, amisulpride, amitriptyline, amobarbital, amoxapine, aripiprazole, atypical antipsychotics, bentazepam, benzoctamine, brotizolam, bupropion, busprione, butabarbital, butalbital, capuride, carbocloral, chloral betaine, chloral hydrate, clomipramine, clonazepam, cloperidone,
  • the subject compound may be employed in combination with levodopa (with or without a selective extracerebral decarboxylase inhibitor such as carbidopa or benserazide), anticholinergics such as biperiden (optionally as its hydrochloride or lactate salt) and trihexyphenidyl (benzhexyl)hydrochloride, other COMT inhibitors such as entacapone, MOA-B inhibitors, antioxidants, A2a adenosine receptor antagonists, cholinergic agonists, NMDA receptor antagonists, serotonin receptor antagonists and dopamine receptor agonists such as alentemol, bromocriptine, fenoldopam, lisuride, naxagolide, pergolide and pramipexole.
  • levodopa with or without a selective extracerebral decarboxylase inhibitor such as carbidopa or benserazide
  • anticholinergics such as bi
  • the dopamine agonist may be in the form of a pharmaceutically acceptable salt, for example, alentemol hydrobromide, bromocriptine mesylate, fenoldopam mesylate, naxagolide hydrochloride and pergolide mesylate.
  • a pharmaceutically acceptable salt for example, alentemol hydrobromide, bromocriptine mesylate, fenoldopam mesylate, naxagolide hydrochloride and pergolide mesylate.
  • Lisuride and pramipexol are commonly used in a non-salt form.
  • the subject compound may be employed in combination with a compound from the phenothiazine, thioxanthene, heterocyclic dibenzazepine, butyrophenone, diphenylbutylpiperidine and indolone classes of neuroleptic agent.
  • phenothiazines include chlorpromazine, mesoridazine, thioridazine, acetophenazine, fluphenazine, perphenazine and trifluoperazine.
  • Suitable examples of thioxanthenes include chlorprothixene and thiothixene.
  • An example of a dibenzazepine is clozapine.
  • An example of a butyrophenone is haloperidol.
  • An example of a diphenylbutylpiperidine is pimozide.
  • An example of an indolone is molindolone.
  • Other neuroleptic agents include loxapine, sulpiride and risperidone.
  • the neuroleptic agents when used in combination with thesubject compound may be in the form of a pharmaceutically acceptable salt, for example, chlorpromazine hydrochloride, mesoridazine besylate, thioridazine hydrochloride, acetophenazine maleate, fluphenazine hydrochloride, flurphenazine enathate, fluphenazine decanoate, trifluoperazine hydrochloride, thiothixene hydrochloride, haloperidol decanoate, loxapine succinate and molindone hydrochloride.
  • a pharmaceutically acceptable salt for example, chlorpromazine hydrochloride, mesoridazine besylate, thioridazine hydrochloride, acetophenazine maleate, fluphenazine hydrochloride, flurphenazine enathate, fluphenazine decanoate, trifluoperazine hydrochloride, thiothix
  • Perphenazine, chlorprothixene, clozapine, haloperidol, pimozide and risperidone are commonly used in a non-salt form.
  • the subject compound may be employed in combination with acetophenazine, alentemol, aripiprazole, amisulpride, benzhexyl, bromocriptine, biperiden, chlorpromazine, chlorprothixene, clozapine, diazepam, fenoldopam, fluphenazine, haloperidol, levodopa, levodopa with benserazide, levodopa with carbidopa, lisuride, loxapine, mesoridazine, molindolone, naxagolide, olanzapine, pergolide, perphenazine, pimozide, pramipexole, quetiapine, ris
  • the subject compound may be employed in combination with an anti-depressant or anti-anxiety agent, including norepinephrine reuptake inhibitors (including tertiary amine tricyclics and secondary amine tricyclics), selective serotonin reuptake inhibitors (SSRIs), monoamine oxidase inhibitors (MAOIs), reversible inhibitors of monoamine oxidase (RIMAs), serotonin and noradrenaline reuptake inhibitors (SNRIs), corticotropin releasing factor (CRF) antagonists, ⁇ -adrenoreceptor antagonists, neurokinin-1 receptor antagonists, atypical anti-depressants, benzodiazepines, 5-HT 1A agonists or antagonists, especially 5-HT 1A partial agonists, and corticotropin releasing factor (CRF) antagonists.
  • norepinephrine reuptake inhibitors including tertiary amine tricyclics and secondary amine tricyclics
  • Specific agents include: amitriptyline, clomipramine, doxepin, imipramine and trimipramine; amoxapine, desipramine, maprotiline, nortriptyline and protriptyline; fluoxetine, fluvoxamine, paroxetine and sertraline; isocarboxazid, phenelzine, tranylcypromine and selegiline; moclobemide: venlafaxine; duloxetine; aprepitant; bupropion, lithium, nefazodone, trazodone and viloxazine; alprazolam, chlordiazepoxide, clonazepam, chlorazepate, diazepam, halazepam, lorazepam, oxazepam and prazepam; buspirone, flesinoxan, gepirone and ipsapirone, and pharmaceutically acceptable salts thereof.
  • COMT inhibitor drugs have a beneficial effect in ill individuals if the principle or minor cause of illness is due to frontal lobe hypodopaminergia for multiple reasons, including, but not limited to, COMT over activity.
  • COMT inhibitors are expected to be more useful in individuals with hypo-methylated MB-COMT promoter and/or Val/Val and Val/Met genotype than those with Met/Met genotype.
  • the medicinal products which are useful in the treatment of these diseases consist of COMT inhibitor drugs or MB-COMT inhibitors or a pharmaceutical salt thereof either alone or in the form of a composition in which it is combined with any other pharmaceutically compatible product, which may be inert or physiologically active. These medicinal products may be used orally, topically, parenterally or rectally.
  • mammals including, but not limited to, cows, sheep, goats, horses, dogs, cats, guinea pigs, or other bovine, ovine, equine, canine, feline, or rodent, such as mouse, species can be treated.
  • bovine, ovine, equine, canine, feline, or rodent, such as mouse species
  • the method can also be practiced in other species, such as avian species (e.g., chickens).
  • the compounds of the present invention may be administered by oral, parenteral (e.g., intramuscular, intraperitoneal, intravenous, ICV, intracisternal injection or infusion, subcutaneous injection, or implant), by inhalation spray, nasal, vaginal, rectal, sublingual, or topical routes of administration and may be formulated, alone or together, in suitable dosage unit formulations containing conventional non-toxic pharmaceutically acceptable carriers, adjuvants and vehicles appropriate for each route of administration.
  • the compounds of the invention are effective for use in humans.
  • administration of” and or “administering a” compound should be understood to mean providing a compound of the invention or a prodrug of a compound of the invention to the individual in need of treatment.
  • compounds of this invention can be administered at prophylactically effective dosage levels to prevent the above-recited conditions and disorders, as well as to prevent other conditions and disorders associated with calcium channel activity.
  • composition as used herein is intended to encompass a product comprising specified ingredients in predetermined amounts or proportions, as well as any product which results, directly or indirectly, from combination of the specified ingredients in the specified amounts.
  • Such term in relation to pharmaceutical composition is intended to encompass a product comprising the active ingredient(s), and the inert ingredient(s) that make up the carrier, as well as any product which results, directly or indirectly, from combination, complexation or aggregation of any two or more of the ingredients, or from dissociation of one or more of the ingredients, or from other types of reactions or interactions of one or more of the ingredients.
  • compositions are prepared by uniformly and intimately bringing the active ingredient into association with a liquid carrier or a finely divided solid carrier or both, and then, if necessary, shaping the product into the desired formulation.
  • the active object compound is included in an amount sufficient to produce the desired effect upon the process or condition of diseases.
  • the pharmaceutical compositions of the present invention encompass any composition made by mixing a compound of the present invention and a pharmaceutically acceptable carrier.
  • compositions intended for oral use may be prepared according to any method known to the art for the manufacture of pharmaceutical compositions and such compositions may contain one or more agents selected from the group consisting of sweetening agents, flavoring agents, coloring agents and preserving agents in order to provide pharmaceutically elegant and palatable preparations.
  • Tablets contain the active ingredient in admixture with non-toxic pharmaceutically acceptable excipients that are suitable for the manufacture of tablets.
  • the tablets may be uncoated or they may be coated by known techniques to delay disintegration and absorption in the gastrointestinal tract and thereby provide a sustained action over a longer period.
  • compositions for oral use may also be presented as hard gelatin capsules wherein the active ingredients are mixed with an inert solid diluent, for example, calcium carbonate, calcium phosphate or kaolin, or as soft gelatin capsules wherein the active ingredient is mixed with water or an oil medium, for example peanut oil, liquid paraffin, or olive oil.
  • an inert solid diluent for example, calcium carbonate, calcium phosphate or kaolin
  • water or an oil medium for example peanut oil, liquid paraffin, or olive oil.
  • Aqueous suspensions, oily suspensions, dispersible powders or granules, oil-in-water emulsions, and sterile injectable aqueous or oleagenous suspension may be prepared by standard methods known in the art.
  • pharmaceutically acceptable it is meant the carrier, diluent or excipient must be compatible with the other ingredients of the formulation and not deleterious to the recipient thereof.
  • the subject compounds are further useful in a method for the prevention, treatment, control, amelioration, or reduction of risk of the diseases, disorders and conditions noted herein.
  • the dosage of active ingredient in the compositions of this invention may be varied, however, it is necessary that the amount of the active ingredient be such that a suitable dosage form is obtained.
  • the active ingredient may be administered to patients (animals and human) in need of such treatment in dosages that will provide optimal pharmaceutical efficacy.
  • the selected dosage depends upon the desired therapeutic effect, on the route of administration, and on the duration of the treatment.
  • the dose will vary from patient to patient depending upon the nature and severity of disease, the patient's weight, special diets then being followed by a patient, concurrent medication, and other factors which those skilled in the art will recognize.
  • dosage levels of between 0.001 to 10 mg/kg. of body weight daily are administered to the patient, e.g., humans and elderly humans.
  • the dosage range will generally be about 0.5 mg to 1.0 g. per patient per day which may be administered in single or multiple doses.
  • the dosage range will be about 0.5 mg to 500 mg per patient per day; in another embodiment about 0.5 mg to 200 mg per patient per day; and in yet another embodiment about 5 mg to 50 mg per patient per day.
  • Pharmaceutical compositions of the present invention may be provided in a solid dosage formulation such as comprising about 0.5 mg to 500 mg active ingredient, or comprising about 1 mg to 250 mg active ingredient.
  • the pharmaceutical composition may be provided in a solid dosage formulation comprising about 1 mg, 5 mg, 10 mg, 25 mg, 50 mg, 100 mg, 200 mg or 250 mg active ingredient.
  • the compositions may be provided in the form of tablets containing 1.0 to 1000 milligrams of the active ingredient, such as 1, 5, 10, 15, 20, 25, 50, 75, 100, 150, 200, 250, 300, 400, 500, 600, 750, 800, 900, and 1000 milligrams of the active ingredient for the symptomatic adjustment of the dosage to the patient to be treated.
  • the compounds may be administered on a regimen of 1 to 4 times per day, such as once or twice per day.
  • compositions of the present invention suitable for parenteral administration may be prepared as solutions or suspensions of the active compounds in water.
  • a suitable surfactant can be included such as, for example, hydroxypropylcellulose.
  • Dispersions can also be prepared in glycerol, liquid polyethylene glycols, and mixtures thereof in oils. Further, a preservative can be included to prevent the detrimental growth of microorganisms.
  • compositions of the present invention suitable for injectable use include sterile aqueous solutions or dispersions.
  • the compositions can be in the form of sterile powders for the extemporaneous preparation of such sterile injectable solutions or dispersions.
  • the final injectable form must be sterile and must be effectively fluid for easy syringability.
  • the pharmaceutical compositions must be stable under the conditions of manufacture and storage, and thus should be preserved against the contaminating action of microorganisms such as bacteria and fungi.
  • the carrier can be a solvent or dispersion medium containing, for example, water, ethanol, polyol (e.g. glycerol, propylene glycol and liquid polyethylene glycol), vegetable oils, and suitable mixtures thereof.
  • compositions of the present invention can be in a form suitable for topical use such as, for example, an aerosol, cream, ointment, lotion, and dusting powder. Further, the compositions can be in a form suitable for use in transdermal devices. These formulations may be prepared, utilizing a compound represented of the invention, or pharmaceutically acceptable salts thereof, via conventional processing methods. As an example, a cream or ointment is prepared by mixing hydrophilic material and water, together with about 5 wt % to about 10 wt % of the compound, to produce a cream or ointment having a desired consistency.
  • compositions of this invention can be in a form suitable for rectal administration wherein the carrier is a solid, such as, for example, where the mixture forms unit dose suppositories.
  • suitable carriers include cocoa butter and other materials commonly used in the art.
  • the suppositories may be conveniently formed by first admixing the composition with the softened or melted carrier(s) followed by chilling and shaping in moulds.
  • the pharmaceutical formulations described above may include, as appropriate, one or more additional carrier ingredients such as diluents, buffers, flavoring agents, binders, surface-active agents, thickeners, lubricants, and preservatives (including anti-oxidants).
  • additional carrier ingredients such as diluents, buffers, flavoring agents, binders, surface-active agents, thickeners, lubricants, and preservatives (including anti-oxidants).
  • additional carrier ingredients such as diluents, buffers, flavoring agents, binders, surface-active agents, thickeners, lubricants, and preservatives (including anti-oxidants).
  • additional carrier ingredients such as diluents, buffers, flavoring agents, binders, surface-active agents, thickeners, lubricants, and preservatives (including anti-oxidants).
  • other adjuvants can be included to render the formulation isotonic with the blood of the intended recipient.
  • RT room temperature
  • Rac Racemic
  • SAM aminosulfonyl; sulfonamide or SO 2 NH 2
  • SPA scintillation proximity assay
  • Th (2- or 3-thienyl)
  • TFA trifluoroacetic acid
  • THF Tetrahydrofuran
  • TLC thin layer chromatography
  • Tr or trityl N-triphenylmethyl), C 3 H 5 (Allyl), Me (methyl), Et (ethyl), n-Pr (normal propyl), i-Pr (isopropyl), n-Bu (normal butyl), i-Butyl (isobutyl), s-Bu (secondary butyl), t-Bu (tertiary butyl), c-Pr (cyclopropyl), c-Bu (cyclobutyl), c-Pen (cyclopentyl), c-Hex (cyclohexyl).
  • the present compounds can be prepared according to the procedures provided in the Examples.
  • the following Examples further describe, but do not limit, the scope of the invention.
  • NMR data is in the form of delta ( ⁇ ) values for major diagnostic protons, given in parts per million (ppm) relative to tetramethylsilane (TMS) as internal standard, determined at 300 MHz, 400 MHz or 500 MHz using the indicated solvent.
  • TMS tetramethylsilane
  • Conventional abbreviations used for signal shape are: s. singlet; d. doublet; t, triplet; m. multiplet; br. Broad; etc.
  • “Ar” signifies an aromatic signal.
  • the procedures described herein for synthesizing the compounds may include one or more steps of protecting group manipulations and of purification, such as, re-crystallization, distillation, column chromatography, flash chromatography, thin-layer chromatography (TLC), radial chromatography and high-pressure chromatography (HPLC).
  • the products can be characterized using various techniques well known in the chemical arts, including proton and carbon-13 nuclear magnetic resonance ( 1 H and 13 C NMR), infrared and ultraviolet spectroscopy (IR and UV), X-ray crystallography, elemental analysis and HPLC and mass spectrometry (HPLC-MS).
  • Methods of protecting group manipulation, purification, structure identification and quantification are well known to one skilled in the art of chemical synthesis.
  • solvents are those which will at least partially dissolve one or all of the reactants and will not adversely interact with either the reactants or the product.
  • Suitable solvents are aromatic hydrocarbons (e.g, toluene, xylenes), halogenated solvents (e.g, methylene chloride, chloroform, carbontetrachloride, chlorobenzenes), ethers (e.g, diethyl ether, diisopropylether, tert-butyl methyl ether, diglyme, tetrahydrofuran, dioxane, anisole), nitriles (e.g, acetonitrile, propionitrile), ketones (e.g, 2-butanone, dithyl ketone, tert-butyl methyl ketone), alcohols (e.g, methanol, ethanol, n-propanol, iso-propanol, n-butanol, t-butanol
  • Suitable bases are, generally, alkali metal hydroxides, alkaline earth metal hydroxides such as lithium hydroxide, sodium hydroxide, potassium hydroxide, barium hydroxide, and calcium hydroxide; alkali metal hydrides and alkaline earth metal hydrides such as lithium hydride, sodium hydride, potassium hydride and calcium hydride; alkali metal amides such as lithium amide, sodium amide and potassium amide; alkali metal carbonates and alkaline earth metal carbonates such as lithium carbonate, sodium carbonate, cesium carbonate, sodium hydrogen carbonate, and cesium hydrogen carbonate; alkali metal alkoxides and alkaline earth metal alkoxides such as sodium methoxide, sodium ethoxide, potassium tert-butoxide and magnesium ethoxide; alkali metal alkyls such as methyllithium, n-butyllithium, sec-butyllithium, t-bultyl
  • compounds of this invention contain one or more stereocenters that may be prepared as single enantiomers or diastereomers, or as mixtures containing two or more enantiomers or diastereomers in any proportion.
  • the compounds of the present invention can be prepared readily according to the following Schemes and specific examples, or modifications thereof, using readily available starting materials, reagents and conventional synthesis procedures. In these reactions, it is also possible to make use of variants which are themselves known to those of ordinary skill in this art but are not mentioned in greater detail.
  • the general procedures for making the compounds claimed in this invention can be readily understood and appreciated by one skilled in the art from viewing the following Schemes.
  • Key intermediate C is elaborated to compounds of the invention as described in Scheme 2. Reaction at high temperature (200° C.) with substituted anilines mediated by acetic acid provides target compounds 2. The same conditions at reduced temperature (80° C.) provide the pyridinones 3 which can be converted to the N—BOC protected amines 4 via Curtius rearrangement in t-BuOH, Alkylation introduces the R 2 substituent ( ⁇ 5) and deprotection, and a second alkylation reaction introduces R 3 and provides benzyl protected dialkylamines 7. Target compounds 8 are prepared via catalytic hydrogenation. Reaction of key intermediate C with substituted anilines and acetic acid at intermediate temperature (160° C.) provides compounds 9 which are brominated to provide 10. Suzuki and Negishi reactions of 10 with organoboron and organozinc reagents, followed by deprotection provide target compounds 12. Alternatively, compounds 10 are magnesiated, converted to methyl borate 13, and deprotected to afford target compounds 14.
  • Compounds 2-9 and 11 of Scheme 2 can be further modified by manipulation of the substitutent groups by general methods known in the art, including (but not limited to) cross coupling, oxidation, reduction, dealkylation, alkylation, acylation, and the like, and this modification may occur prior to or after deprotection.
  • Key intermediate D is converted to compounds of the invention as described in Scheme 4.
  • Reaction at intermediate temperature (140° C.) with substituted anilines mediated by acetic acid provides 20 which is deprotected to provide target compounds 21.
  • 20 is subjected to a protecting group switch followed by lithiation and reaction with carbonyl compounds to introduce the R 1 substitutent. Deprotection affords target compounds 23.
  • Compounds 20-23 of Scheme 4 can be further modified by manipulation of the substitutent groups by general methods known in the art, including (but not limited to) cross coupling, oxidation, reduction, dealkylation, alkylation, acylation, and the like, and this modification may occur prior to or after deprotection.
  • Compounds 24-29 of Scheme 5 can be further modified by manipulation of the substitutent groups by general methods known in the art, including (but not limited to) cross coupling, oxidation, reduction, dealkylation, alkylation, acylation, and the like, and this modification may occur prior to or after deprotection.
  • NaClO 2 (28.3 g, 315 mmol) was added portion-wise to a mixture of 5-(benzyloxy)-1-(biphenyl-3-yl)-4-oxo-1,4-dihydropyridine-2-carbaldehyde (80 g, 210 mmol) in 800 mL of acetone and 800 mL of water at room temperature. The resulting mixture was stirred at room temperature for 3 h. The solvent was removed to give a residue which was washed with water and MeOH and dried to give 5-(benzyloxy)-1-(biphenyl-3-yl)-4-oxo-1,4-dihydropyridine-2-carboxylic acid.
  • Lithium chloride (515 mg, 12.1 mmol) in a 25 mL round bottom flask under high vacuum was heated with a heat gun until a free flowing granular solid was obtained ( ⁇ 5 min). The flask was cooled to room temperature, purged with N 2 , and treated with isopropylmagnesium chloride (6.1 mL of a 2 M solution in THF). After stirring at room temperature for 1 h, the mixture was cooled to ⁇ 10° C. and treated with 3-(benzyloxy)-1-(biphenyl-3-yl)-5-bromopyridin-4(1H)-one (1.05 g, 2.4 mmol) as a suspension in 3.5 mL of THF.
  • n-BuLi (122 mL, 305 mmol) was added to a solution of diisopropylamine (30.81 g, 305 mmol) in 600 mL of dry THF at ⁇ 78° C. under an nitrogen atmosphere. After stirring for 30 min, a solution of 2-fluoro-3-iodopyridine (68.02 g, 305 mmol) in THF (150 mL) was added dropwise. The resulting mixture was stirred for 1 h at ⁇ 78° C. Water was added (50 mL) to quench the reaction at ⁇ 78° C. and after warming to room temperature an additional 100 mL of water was added.
  • the vial was sealed and the reaction mixture was heated at 135° C. under microwave irradiation for 15 minutes, then cooled.
  • the organic layer was separated, washed with 1 mL water, dried over Na 2 SO 4 , filtered, stirred over Quadrapure TU resin (Aldrich), concentrated in vacuo, and used without further purification.
  • 4-Nitro-1H-benzimidazole was hydrogenated (48 psi) with 1 g 10% Pd/C in HOAc (100 mL) for 3 h.
  • the crude mixture was filtered through a pad of Celite, washing with MeOH, and concentrated.
  • the residue was taken up in 2 M aq HCl and applied to a Phenomenex Strata-X—C ion exchange column (5 g).
  • the column was washed with H 2 O and MeOH.
  • the washings contained additional material and were applied to another Strata X—C ion exchange column (5 g).
  • the columns were washed with H 2 O and MeOH.
  • the flask was equipped with a condenser, evacuated, and purged with nitrogen. Evacuation was repeated three times and 50 mL THE and 25 mL 1 M aq cesium carbonate were added. The reaction mixture was heated at 85° C. for 15 h. Upon cooling, the organic layer was separated, washed with 10 mL water, dried over Na 2 SO 4 , filtered, and concentrated in vacuo.
  • reaction mixture was stirred at 60° C. under nitrogen for 1.5 h. After cooling to room temperature the reaction mixture was partitioned between half-saturated aqueous NH 4 Cl and EtOAc. Layers were separated and the aqueous solution was extracted with EtOAc (3 ⁇ ). Combined organic solutions were dried over Na 2 SO 4 , filtered and concentrated in vacuo. The resulting residue was dissolved in CH 2 Cl 2 -TFA (1:1, 6 mL), allowed to stand at room temperature for 10 min and then concentrated. Purification was done by preparative HPLC (5-95% CH 3 CN/H 2 O over 20 min, 0.05% added TFA, C18 OBD Sunfire 30 ⁇ 150 mm).
  • reaction mixture was heated at reflux under a nitrogen atmosphere for 1 h before being cooled and concentrated under reduced pressure and purified by flash chromatography (80 g SiO 2 , 0-100% ethyl acetate/hexanes gradient elution) to provide 4-oxo-6-phenyl-4H-pyran-3-yl acetate.
  • the activity of the compounds in accordance with the present invention as COMT inhibitors may be readily determined without undue experimentation using a fluorescence or fluorescence polarization (FP) methodology that is well known in the art (Kurkela M et al., Anal Biochem (331) 2004, 198-200 and Graves, T L et al., Anal Biochem (373) 2008, 296-306).
  • Assays utilized purified human COMT enzyme of the Val158 variant (membrane-bound MB-COMT or soluble S-COMT) containing a C-terminal 6 or 10-histidine tag.
  • the COMT inhibitory activity of the compounds of the present invention was determined in accordance with the following experimental methods detailed below.
  • the fluorescence assay was based on methylation of a substrate (6,7-dihydroxycoumarin or ‘esculetin’) by COMT to produce a highly fluorescent product (7-hydroxy-6-methoxycoumarin or ‘scopoletin’).
  • the reaction requires the presence of magnesium ions and a methyl donor, in this case S-adenosylmethionine (SAM).
  • SAM S-adenosylmethionine
  • a 10 mM compound stock in DMSO was used to prepare 10 point 3-fold dilution series and 1 ⁇ L of appropriate dilution was plated into assay wells (black 96 well round bottom polystyrene plates from Costar; catalog #3792).
  • Recombinant enzyme was diluted in assay buffer (100 mM Na 2 HPO 4 pH 7.4, 1 mM DTT, 0.005% Tween-20) and 35 ⁇ L was added to assay wells containing 1 ⁇ L of compound. Preincubation of COMT enzyme and compound proceeded for 2 hours at room temperature. Enzyme assays were initiated with 5 uL of a mixture containing 40 ⁇ M SAM (USB catalog #US10601), 4 ⁇ M esculetin (substrate) and 40 mM MgCl 2 .
  • assay buffer 100 mM Na 2 HPO 4 pH 7.4, 1 mM DTT, 0.005% Tween-20
  • SAC S-adenosyl-L-cysteine
  • the final concentration of the SAH antibody/SAC TAMRA mix was 1:60 and 1:240,000, respectively.
  • fluorescence polarization was measured using a Tecan Safire 2 plate reader (excitation 530 nm, emission 595 nm). Titration curves and IC 50 values were calculated using standard protocols.
  • the compounds of formula I have an IC 50 activity of 100 ⁇ M or less for COMT. Many of the compounds of formula I have an IC50 of less than 200 nM. For example, the compounds below have IC 50 ⁇ 250 nM in the “Esculetin or Fluorescence Polarization assay”. In particular, the compounds of Examples 1-4, 6, and 8-16 exhibited the following IC 50 (nM) values:

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